Dr. Meg Sutherland-Smith, right, associate director of veterinary services at the San Diego Zoo, checks Xiao Liwu's heart rate. Panda keeper Liz Simmons, left, helps Xiao Liwu with his binky. The healthy panda was born at the zoo and has been on public display for a limited number of hours since last week.

Dr. Meg Sutherland-Smith, right, associate director of veterinary services at the San Diego Zoo, checks Xiao Liwu's heart rate. Panda keeper Liz Simmons, left, helps Xiao Liwu with his binky. The healthy panda was born at the zoo and has been on public display for a limited number of hours since last week. (Don Bartletti / Los Angeles Times)